mailrelay.intact.at has no CNAME records.
Question and response
Question
dig mailrelay.intact.at. NS
Answer
The response has no answer records.
Authority
intact.at. 1777 SOA anexia.secondns.at. support.anexia.at. 7 10000 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0